Skip to main content

Advertisement

Table 3 Subgroup comparison of radiographic parameters

From: Influence of screw density on thoracic kyphosis restoration in hypokyphotic adolescent idiopathic scoliosis

Variable Group 1 (Postop TK ≥ 20°) Group 2 (Postop TK<20°) P value
Lenke classification (1/2/3) 10/4/3 18/12/10
Riser sign 2.47 ± 1.23 2.90 ± 1.46 0.294
Apical vertebra rotation (Nash-Moe) 1.71 ± 0.47 1.60 ± 0.67 0.558
Convex-Bending Cobb angle (°) 27.12 ± 5.48 31.53 ± 7.33 0.804
Flexibility (%) 51 ± 4 42 ± 8 <0.0001
Preoperative MT Cobb angle (°) 55.82 ± 10.48 54.98 ± 12.23 0.804
Postoperative MT Cobb angle (°) 17.88 ± 7.53 14.83 ± 7.59 0.169
Change in MT Cobb angle (°) 37.94 ± 9.65 40.15 ± 8.28 0.384
MT curve correction (%) 68 ± 13 74 ± 10 0.079
Preoperative TK (T5–T12; °) 5.18 ± 3.28 4.58 ± 3.54 0.552
Postoperative TK (T5–T12; °) 23.41 ± 3.20 14.70 ± 3.22 <0.0001
Change in TK (T5–T12; °) 18.24 ± 4.05 10.13 ± 3.99 <0.0001
Preoperative LL (L1–S1; °) −45.76 ± 9.68 −48.80 ± 9.33 0.271
Postoperative LL (L1–S1; °) −50.82 ± 8.75 −51.35 ± 8.49 0.833
Change in LL (L1–S1; °) −5.06 ± 13.51 −2.55 ± 10.35 0.449
  1. Values are mean ± standard deviation, number of participants, or as otherwise indicated
  2. MT indicates main thoracic; TK thoracic kyphosis, LL lumbar lordosis